航空发动机复合材料叶片切削加工智能装夹系统  

Intelligent clamping system for machining composite blades of aeroengines

作　　者：张得礼[1] 秦峥 刘哲[2] 李明[3] 何凯 ZHANG Deli;QIN Zheng;LIU Zhe;LI Ming;HE Kai(College of Mechanical&Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Engineering Technology Center,Shenyang Aircraft Company,Shenyang 110850,China;Factory 21,Shenyang Aircraft Company,Shenyang 110850,China;Aerospace Haiying(Zhenjiang)SpecialMaterials Co.,Ltd,Zhenjiang 212001,China)

机构地区：[1]南京航空航天大学机电学院,南京210016 [2]沈阳飞机工业(集团)有限公司工程技术中心,沈阳110850 [3]沈阳飞机工业(集团)有限公司二十一厂,沈阳110850 [4]航天海鹰(镇江)特种材料有限公司,镇江212001

出　　处：《航空学报》2023年第20期286-294,共9页Acta Aeronautica et Astronautica Sinica

基　　金：国家自然科学基金(51975280)。

摘　　要：航空发动机复合材料叶片通过热压成型后,型面误差大,刚性弱,其榫根铣削和叶片切边加工装夹难度大,往往需要通过扫描来重构型面,重新生成加工代码,导致加工过程复杂,加工代码文件不通用,严重影响了其批量生产效率。提出用于航发复材叶片切削加工的多点阵自适应装夹和调姿系统。该系统采用定位和夹紧分开的柔性阵列工装,夹紧采用弹性吸盘,定位采用刚性定位器,确保吸紧和定位后叶片型面的精度;该系统能够在叶面最大误差范围内,根据叶片型面和榫根的误差自动地调节加工位姿,确保在不修改加工代码的情况下,实现满足性能要求的榫根和前后缘加工,大大减小了叶片切削加工的难度,提高了加工的效率。After hot pressing molding of aeroengine composite blades,the profile error is large and the rigidity is weak,and the clamping of the blade in the tenon root milling and blade edge trimming poses significant challenge.Therefore,it is often necessary to reconstruct the profile through scanning and regenerate CNC machining codes,which leads to complex processing processes and non-universal CNC processing files,and thus,seriously affects the batch production efficiency.In this paper,a multi-point adaptive clamping and attitude adjustment system for aircraft composite blade machining is proposed.This system employs flexible array tooling with separate positioning and clamping,using elastic suction cups for clamping,and rigid locators for positioning to ensure high accuracy of the molded surface after tightening and positioning.Results show that the system can automatically adjust the machining position and posture according to the error of blade profile and tenon root.Results also show that this system can ensure that the tenon root and edges meet the performance requirements without modifying the CNC machining code;therefore,greatly reduces the dfficulty of blade cutting and improves the machining efficiency.

关 键 词：柔性夹具 多点支撑 航发叶片 复合材料 切削加工 

分 类 号：V263[航空宇航科学与技术—航空宇航制造工程]